I'm in a 14-team Keeper league, with 30-man rosters. It's also a H2H Points league. This is my first time in a Points league (this league has been going for over 10 years and I'm replacing a manager for the long-term) and I've been having a little trouble developing a good strategy in this format. That said..

Just got offered Matt Joyce and Jon Niese for Chris Sale.

I know Matt Joyce will probably go on the DL today, but I feel like Sale is one bad outing from having hardly any trade value. Should I take this now before his arm falls off? I need corner outfield help, as I'm currently rotating Cody Ross and Gerardo Parra in and out of LF, with Nelson Cruz on the other side in RF. Cruz also qualifies at LF. However, I also have Brett Gardner coming back (hopefully) soon. Angel Pagan and Drew Stubbs (DL) in CF.

The owner also has Justin Upton, Shin-Soo Choo, and Desmond Jennings. Should I try to go after Upton with Sale, straight up?